Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Innovative Technologies Reloading Products?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Trickymissfit" data-source="post: 639571" data-attributes="member: 25383"><p>most all of us do not think in centerlines when we are trying to make a good case. An imaginary centerline right thru the center of the case is your true gauge line that will never change. Then you cbase everything off that line. The shoulder to base should be based off a gauge line (books like to call it a datum line, but that is incorrect in precision measuring). There are specs that call out a diameter for the gauge line point at the shoulder, or you can simply develop your own diameter and use it. I prefer to split the difference between the neck O.D. and shoulder O.D. Finding the correct headspace number with that method is not hard to do, and you really don't need any serious measuring tools. Just a good digital caliper and the correct bushing for the shoulder is all you really need. </p><p> </p><p>The folks here that happen to own their own chamber reamer may even have a print showing the gauge line data on it. That's a good start, but after that your at the mercy of the gunsmith's chambering job. If a go gauge headspaces in your chamber about right then your home free, but if not you got a place to start anyway.</p><p> </p><p>Don't let the issue beat you up, cause it just ain't that hard to do.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 639571, member: 25383"] most all of us do not think in centerlines when we are trying to make a good case. An imaginary centerline right thru the center of the case is your true gauge line that will never change. Then you cbase everything off that line. The shoulder to base should be based off a gauge line (books like to call it a datum line, but that is incorrect in precision measuring). There are specs that call out a diameter for the gauge line point at the shoulder, or you can simply develop your own diameter and use it. I prefer to split the difference between the neck O.D. and shoulder O.D. Finding the correct headspace number with that method is not hard to do, and you really don't need any serious measuring tools. Just a good digital caliper and the correct bushing for the shoulder is all you really need. The folks here that happen to own their own chamber reamer may even have a print showing the gauge line data on it. That's a good start, but after that your at the mercy of the gunsmith's chambering job. If a go gauge headspaces in your chamber about right then your home free, but if not you got a place to start anyway. Don't let the issue beat you up, cause it just ain't that hard to do. gary [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Innovative Technologies Reloading Products?
Top